*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#f3f4f8;color:#111}a{color:inherit}.bar{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:#fff;border-bottom:1px solid #e9ebf3;position:sticky;top:0;z-index:10}h1{margin:0;font-size:1.25rem}main.card{max-width:960px;margin:24px auto 120px;background:#fff;padding:24px;border-radius:20px;box-shadow:0 16px 48px #0f172a14;position:relative}button{padding:10px 16px;border:0;border-radius:999px;background:#111;color:#fff;cursor:pointer;font-weight:600;transition:transform .12s ease,box-shadow .12s ease,opacity .12s ease}button:hover{opacity:.9}button:active{transform:scale(.98)}button.secondary{background:#f0f1f6;color:#1f2937}input[type=text],input[type=date],textarea{padding:10px 14px;border:1px solid #d7dbea;border-radius:12px;font:inherit;width:100%}.row{display:flex;gap:16px;align-items:center;margin-bottom:20px;flex-wrap:wrap}.auth{display:flex;gap:12px;align-items:center}.hidden{display:none!important}.muted{color:#6b7280}.center{text-align:center}.board{display:flex;flex-direction:column;gap:12px;position:relative;padding-bottom:24px}.board.drop-root:after{content:"Drop to make top-level";position:absolute;left:50%;bottom:0;transform:translate(-50%);padding:6px 16px;background:#3b82f61a;border:1px dashed rgba(59,130,246,.4);border-radius:999px;color:#1d4ed8;font-size:.85rem}.node{list-style:none}.task-card{position:relative;background:#fdfdff;border-radius:16px;padding:16px;box-shadow:0 10px 30px #0f172a14;display:flex;flex-direction:column;gap:12px;border:2px solid transparent;transition:border-color .12s ease,box-shadow .12s ease,transform .12s ease}.task-card.dragging{opacity:.4}.task-card.drag-target{border-color:#94a3b8;box-shadow:0 18px 40px #0f172a1f}.task-header{display:flex;gap:12px;align-items:flex-start}.task-header input[type=checkbox]{margin-top:4px}.task-title{flex:1;font-size:1.05rem;line-height:1.4;font-weight:600}.task-title.done{text-decoration:line-through;color:#9ca3af}.task-meta{display:flex;gap:8px;flex-wrap:wrap;font-size:.9rem;color:#475569}.badge{padding:4px 10px;background:#eef2ff;border-radius:999px}.badge.overdue{background:#fee2e2;color:#b91c1c}.task-actions{display:flex;gap:8px;flex-wrap:wrap}.task-actions button{background:#1e293b;font-size:.85rem;padding:8px 14px}.task-actions button.secondary{background:transparent;border:1px solid #cbd5f5;color:#1e293b}.children{display:flex;flex-direction:column;gap:10px;margin-left:36px;border-left:2px dashed rgba(148,163,184,.4);padding-left:18px}.fab{position:fixed;bottom:32px;right:32px;width:64px;height:64px;border-radius:50%;background:#111827;box-shadow:0 12px 32px #11182740;font-size:2rem;display:grid;place-items:center;z-index:20}.modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;display:flex;align-items:center;justify-content:center;padding:24px;z-index:30}.modal-content{width:min(480px,100%);background:#fff;border-radius:20px;padding:32px 32px 28px;box-shadow:0 24px 60px #0f172a40;position:relative;display:flex;flex-direction:column;gap:18px}.modal-close{position:absolute;top:18px;right:18px;width:36px;height:36px;border-radius:50%;background:transparent;color:#111;font-size:1.4rem;border:none}.modal-close:hover{background:#94a3b833}#task-form{display:flex;flex-direction:column;gap:16px}#task-form label{font-weight:600;font-size:.95rem;color:#1f2937}.checkbox{display:flex;align-items:center;gap:10px;font-weight:500}.form-actions{display:flex;gap:12px;justify-content:flex-end}.empty{text-align:center}.footer{margin-top:120px}.subtarget{position:absolute;top:12px;right:12px;bottom:12px;left:12px;border-radius:12px;background:#3b82f614;border:2px dashed rgba(59,130,246,.45);display:none;align-items:center;justify-content:center;font-weight:600;color:#1d4ed8}.task-card.show-subtarget .subtarget{display:flex}.drop-indicator{position:absolute;left:0;right:0;height:4px;background:#3b82f6;border-radius:999px;transform:scaleX(0);transform-origin:left;transition:transform .12s ease}.drop-indicator.top{top:-4px}.drop-indicator.bottom{bottom:-4px}.drop-indicator.active{transform:scaleX(1)}@media (max-width: 720px){main.card{margin:16px;padding:20px}.children{margin-left:20px;padding-left:12px}.task-actions{flex-direction:column;align-items:stretch}.fab{width:56px;height:56px;font-size:1.7rem;bottom:24px;right:24px}}